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The p-Block Elements — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistryThe p-Block Elements3 Marks
Question
Phosphorus has three allotropic forms —
  1. white phosphorus
  2. red phosphorus and
  3. black phosphorus.
Write the difference between white and red phosphorus on the basis of their structure and reactivity.
✓

Answer

White phosphorus is more reactive than red phosphorus because white P exists as discrete $P_4$ molecules. In red P several $P_4$ tetrahedral molecules are linked to formed polymeric chain.
Black phosphorus is the most stable form of phosphorus it is least reactive among all the allotrophic form of phosphorus.

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